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Description: Small grain (e.g., wheat and barley) planters such as this and NAL #4804 are designed with soil tillers such as a disk or chisel plow in front of the planter, so the entire tilling and planting may be completed in one pass. However, some such as the corn and soybean planters in NAL #4801 and #4802 are used after the soil has been tilled in a previous operation. All of these planters usually include: a) separate bins for seed and fertilizer; b) mechanisms to insert seed and fertilizer into the soil; c) rollers or crushers to compact soil over the seed and fertilizer; and d) an arm that marks the center of the route for the next pass of the planter. Planters for small grains may also have separate bins for sowing a legume such as alfalfa, so that the grain may serve as a "nurse crop" for the legume's first growing season. The grain planter in NAL #4805 is for minimal tillage, disking and planting in a single pass. The density of planted seeds and the depth at which the seed is deposited are adjustable. Depth of planting is usually about 1 to 1.5" for corn, and about 1" small grains. The interval to germination depends mostly on soil moisture and temperature.

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